our first witness is mark kelly. he's -- our first witness is mark can kelly, retired astronaut and co-founded americans for potential solutions. thsz an advocacy that promotes to prevent gun violence and protect responsible gun ownership, with his wife, former congresswoman gabrielle giffords. please go ahead, sir. >> thank you chairman leahy and ranking member grassry for inviting me today. i look forward to an instructive dialogue with your committeeant want to take the opportunity to congratulate gabby's friend jeff lake on new role as arizona's junior senator. as you know, our family has been immeasurableably affected by gun violence. gabby's gift for speech is a distant memory. she struggles to walk and partially blind. a year ago she left the job she loved, serving the people of arizona. but in the past two years, we have watched gabby's determination and spirit and intel lekt conquer her disabilities. we're speaking to you today as americans. we're a lot like many fellow citizens following this debate about g